The most critical detail in the building envelope is determining how the roof system will tie into the air barrier system. This detail is especially problematic when two different manufacturers supply the two systems. Eliminate concerns with just one supplier. The SikaSmart Building Envelope approach solves these critical challenges. All the materials are from a single source and all combinations of roof and air barrier systems have been tested and verified to ensure they work together. You now have peace of mind in knowing that the detail works and that Sika stands behind it.

 

Drawings A and B are Roof to Air Barrier Transition details showing how the connection is made. The adhered Roof to Wall Air Barrier system tie-in in Drawing A depicts a Sarnafil adhered roof. The Sarnafil adhered flashing is installed up the inboard side of the parapet, across the top and down the outboard side of the parapet along with the final termination. Very simply, the edge and face of the Sarnafil flashing is primed with Sikaflex 449 primer, and then a bead of Sikaflex 11 fc is applied along the edge and on top of the flashing.

It’s important to note two things relative to Sikaflex 11 fc: 1) this bead can be applied at any time as long as it is allowed to cure for four hours before overcoating; and 2) this same material is used as the seam sealer throughout the entire air barrier system. The final step to complete the connection is the application of the Sikagard Air Barrier. The mechanically attached Roof to Wall Air Barrier tie-in is seen in Drawing B and shows a Sarnafil mechanically attached roof installed over the Sarnavap® Air Barrier. The air barrier system runs along the deck, under the parapet, then three inches down the slab edge. A six inch strip of Sika MultiSeal 515 Self Adhered seam tape is centered and installed over the Sarnavap Air Barrier. It is important to note two things regarding Sika MultiSeal 515: 1) it can be applied at any time prior to the air barrier system application and 2) this same material is used as the transition tape throughout the air barrier system. The final step to complete the connection is the application of the Sikagard Air Barrier.

 

Eliminate building envelope problems with one supplier. Sika makes it simple to tie your roof system and air barrier system to achieve the desired results for your critical connections. Clear, flexible and simple installations tested and supplied from a single, trusted supplier.